KLX Crankcase vent?
 

Just got back from the LA Barstow to Vegas dual sport ride. Rode the bike hard for 488 miles through sand and rocks. Noticed it was losing a lot of oil through the cam cover seal. Was wondering if there is a crankcase vent that could be clogged and create excess pressure to force oil out there. Anyone have this happen before? Where is the vent located?

How was the ride? A report is due!

Find a hose about 3/8 to 1/2 in diameter leading from the top of your air box to the crank case on the right side.

Did you try re-torquing the cover bolts?

The ride was long, dusty and difficult. I had not ridden much sand before so that was a learning experience. Only crashed twice the second day. A real test of endurance, we rode sunup to sundown both days. Saw more flat tires than any dual sport ride I have ever been to. The KLX performed pretty well once you got going. It was sometimes hard to start out in deep sand.

I noticed the bike was seeping oil there before the ride and checked the cover bolts before the ride and they were fine, that's why I suspect the vent may be clogged.

Is it leaking all around that seal? Or just at the half moons? If it's at the half moons its quite common.

Seems to be mainly at one of the half moons. It's leaking a lot of oil. It's halfway down the window and this bike never uses any oil.

You just need to pull the cover off and put a dab of silicone at the corners of those half moons. Or replace the gasket, some have had to just replace it.